Acta Cryst. (2013). E69, o431 [ doi:10.1107/S1600536813004790 ]
Abstract: The benzimidazolone residue in the title molecule, C10H9N3O3, is almost planar, with the largest deviation from the mean plane being 0.016 (2) Å for the C atom linked to the nitro group. This plane is nearly perpendicular to the 1-allyl chain as indicated by the C-N-C-C torsion angle of 90.9 (3)°. The fused-ring system makes a dihedral angle of 5.6 (3)° with the nitro group, leading to a synperiplanar conformation. In the crystal, zigzag supramolecular chains are formed along the a axis by N-HO hydrogen bonds.
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